Lamp.



E. A. HAWTHORNE.

LAMP.

APPucmuu man MAY 8. 1911.

1,242,186. Patented 001;. 9.1917.

2 SHEETS-SHEET 1.

Inveniov EZZsworiia/fl.HawZFc/ovne,

by Babs.

E. A. HAWTHORNE.

LAMP.

APPLICATiON HLEO an s 191?.

1,242, 186. Patented 001;. 9. 1917.

2 SHEETS SHEET 2.

a5 *H-u I nventor;

by W' (Hays ELLS'WORTH A. HAWTHORNE, F BRIDGEPOBT, CONNECTICUT LAMP.

Specification of Letters Patent.

Patented Oct. 9, 1917.

Application filed May 8, 1917. Serial No. 167,184.

To. all whom, it may concern:

Be it known that I, Ennswoirrri A. IlAW- 'rnonnn, a citizen of theUnited States, and a. resident of Bridgeport, in the county of Fairfieldand State of Connecticut, have inrented an lmprovcn'leut in Lamps, ofwhich the following description. in connection with the accompanyingdrauiugs, is a specification, like characters on the drawings roprcsenting like parts.

This invention relates to lumps. and more partiituihirly (HlK'tf-Ififitlwith menus for facilitating thia. molding and fastening together of theglazing and lamp door or lbezel of the lamp casing.

ture and dust eicluding joint.

lily invention will be best understood by reference to the followingdescription, when taken in connection with the accompanying drawings ofout: specific r-znljioalimcnt thereof, while s scope will be more,"iarticulurly pointed out in the appended claims.

In the d airings:

figure 1 is urentrnl, longitudinal, set tional View oi a lamp embodyingmy invenlion;

Fig. 3 is a. detail central, longitudinal Sc.- tion ol' sonnoi the porkshown in Fig. '1. illustrating the mode of assembling;

Figs. 3 and l are details of one of the nuts with its clumping means;

l- -ig. 5 is a sectional view on line 5--5 of Fig: 1; and

Figs. 6 and 7 are detail views of one of the glazing retainingelement-s.

Referring to the drawings, and to the embodiment of my invention which Ihave lected for illustration. l have there shown a. lamp comprising asuitable light source 8 associated with an ap n'opriatc reflector 9,both mounted within a ensin comprising a body 10 and. a door or beze 11,the latter having a seat 12 for a. glazing or light-transmitting elementThe bezel or door 11 is herein provided with an annular groove 14 toreceive a s1 rip of suitable packing material 15, such as felt, whichmay be and preferably is coated on both sides with shel lac before beingput in place. The seat 12 may be and preferably is inclined withrelation to the face of the lazing l3, and' is resilient so that when helazing is subjected to suflicientpressure, the seat will flex andaccommodateitself to the surface of the glazing, and thus produce a.tight mois- It will be understood, of course, that the packing stripagainst its seat.

15 is initially of such thickness as to be com.- prosscd. when theglazing 13 is brought As a means for holding the glazing seated againstits seat, 1 have herein provided means includingn plurality of screws16, extending radially through the circumferential wall of the door orbezel 11 to the interior of the latter, where they have screwtl'ireadedengagement with suitable nuts 17. Carried b mmul preferably formedintegral with such of the nuts 17 is an arm 18, engu flng the internalsurface of the circumferential Walls of the door or bezel 11, andconstituting a sort of fulcrum for the nut 17. Also carried by andpreferably formed integral with the nut 17 is an arm 19, constituting awedging means cooperating with a. suitable shoulder 20 within the dooror bezel 11. This shoulder ma be otherwise suitably formed, but hereinis formed as a port of an annular groove- 21, Within a head 22.

Carried by and preferably formed integral with each nut .17 is an arm orpair of arms extending inwardly in a direction generally opposite tothat of the arm 19, and so arranged that by turning the screw 16 in theproper direction, the arm 23 urges the glazin 13 toward its seat 12. Thearms 23 may, i? desired, directly on age the glazing 13. but I prefertoprovi e one or more, herein a plurality of retaining elements 24interposed between the arms 23 and the single face of the glazing 13.Each of these elements may, and prom-ably does, interlock with. itsrespective nut 17, and to this end as herein shown, each plate isprovided Witt an integral arm or lu 25 interposed between the arms 23,as will 1e evident from a comparison of Figs. 1 and 5. By this means.the plates 24 are held in their proper positions with relation to theirrespective nuts 17, and the assembling of the parts is greatlyfacilitated.

In assembling the parts, the packing strip 15 is first put in place inthe manner described, after which the glazing 13 is laid in place on thepacking 15. The retaining elements 24 are next laid on. the glazing 13,after which the nuts 17 are put in place, and the screws 16 introducedinto the circumferential wall of the door or bezel, and screwed intotheir re ectivenuts. The inclined arms 19 gradtifily ride down theinclined shoulder 20, and in this way, the arms 23 are brought to bearwith forcible pressure a inst the retaining elements 24. Prefera 1y,the'arms 23 are somewhat resilient, so that in the final position of theparts, said arms are tensioned and hold the glazing against its seatwith spring pressure, and in turn cause the seat to flex and insure atight, dust and moisture excluding joint, yet without danger of breakageof the glazing.

It will thus be seen that the parts will be quickl and convenientlyassembled, and that glaz n of various thicknesseswithin reasonable unitscan be accommodated, and that even in the case of glazings varying inthickness from one point to another along the margin, the resllientclamping devices provide a means for accommodating all such variationsin thickness, without danger of breaking the glazing.

While I have herein shown and described one specific embodiment of myinvention for illustrative purposes, and have disclosed and discussed indetail the construction and arrangement incidental to one specificapplication thereof, it is to be understood that the invention islimited neither to the mere details or relativearrangement of parts, norto the specific embodiment herein shown, but that extensive deviationsfrom the illustrated form or embodiment of the invention may be made,without departing from the principles thereof.

Having thus described my invention, what I claim and desire by LettersPatent to secure is 1. In combination, a glazing, a casing having a seattherefor, and means to hold said glazing seated against said seat,including a screw extending from the exterior to the interior of saidcasing, a nut having screwthreaded engagement with said screw withinsaid casing, an arm carried by said nut and having interlockingengagement with said casing and another arm carried by said nut andarranged to urge said glazing against said seat.

2. In combination, a glazing, a casing having a seat therefor, and meansto hold said glazing seated against said seat, including a screwextending from the exterior to the interior of said casing, a nut havingscrewthreaded engagement with said screw within said casing, an armcarried by said nut and having interlocking engagement with said casing,and means having interlocking engagement with said nut and engaging saidglazing to urge said glazing against said seat.

3. In combination, a glazing, a casing having a seat therefor, and meansto hold said glazing seated against said seat, including a screwextending from the exterior to the interior of said casing, a not havingscrewthreaded engagement with said screw within said casing, an armcarried by said nut and having interlocking engagement with said casing,a second arm carried by said nut, and means having interlockingengagement with said second arm and engaging said glazing to urge saidglazing against said seat.

4. In combination, a glazing, a casing having a seat therefor, and meansto hold said glazing seated against said seat, including a'screwextending from the exterior to the interior of said casing, a nut havingscrewthreaded engagement with said screw with in said casing, an armcarried by said not and having interlocking engagement with said casing,a pair of arms carried by said nut, and means having interlockingengagement with said pair of arms and engaging said glazing to urge saidglazing against said seat.

5. In combination, a glazing, a casin having a seat therefor, and meansto hol said glazing seated against said seat, including a screwextending from the exterior to the interior of said casing, a nut havingscrewthreaded engagement with said screw within said casing, an armcarried by said nut and having interlocking engagement with said casing,a pair of arms carried by said nut, and a plate engaged by said pair ofarms and urged thereby against said glazing, said plate being providedwith an arm embraced by the arms of said pair.

In testimony whereof, I have signed my name to this specification.

ELLSWORTH A. HAWTHORNE.

